Bottom Bracket

taz said:

Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
the original BB in the bike. Can anyone tell me which way I should
unscrew it. I can't shift it either way. There is a flange on the
chain side of the cartridge if that is any help. The bike is at least
5 years old, one of the original Kalaharis. TIA Gaz

http://www.mountainbikerides.co.uk/fettling/bottom_bracket.htm

--
Brian G
www.wetwo.co.uk

On 29/01/2007 17:55, taz said,

Quoted message said:

Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
the original BB in the bike. Can anyone tell me which way I should
unscrew it. I can't shift it either way. There is a flange on the
chain side of the cartridge if that is any help. The bike is at least
5 years old, one of the original Kalaharis. TIA Gaz

See http://www.parktool.com/repair/readhowto.asp?id=93

Both sides undo towards the front, so CCW on the left cup and CW on the
right cup. Undo the left cup first, then the right.

--
Paul Boyd
http://www.paul-boyd.co.uk/

Brian G said:

taz said:

Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
the original BB in the bike. Can anyone tell me which way I should
unscrew it. I can't shift it either way. There is a flange on the
chain side of the cartridge if that is any help. The bike is at least
5 years old, one of the original Kalaharis. TIA Gaz

http://www.mountainbikerides.co.uk/fettling/bottom_bracket.htm

I think that's maybe overdoing it a little on the copper grease, bottom
picture.

--
Mike
Van Tuyl titanium Dura Ace 10
Fausto Coppi aluminium Ultegra 10
Raleigh Record Sprint mongrel

Paul Boyd said:

On 29/01/2007 17:55, taz said,

Quoted message said:

Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
the original BB in the bike. Can anyone tell me which way I should
unscrew it. I can't shift it either way. There is a flange on the
chain side of the cartridge if that is any help. The bike is at least
5 years old, one of the original Kalaharis. TIA GazSeehttp://www.parktool.com/repair/readhowto.asp?id=93

Both sides undo towards the front, so CCW on the left cup and CW on the
right cup. Undo the left cup first, then the right.

--
Paul Boydhttp://www.paul-boyd.co.uk/

Mine is the shimano cartridge type. From what I've read some have
right and some left hand thread.

taz said:

Paul Boyd said:

On 29/01/2007 17:55, taz said,

Quoted message said:

Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
the original BB in the bike. Can anyone tell me which way I should
unscrew it. I can't shift it either way. There is a flange on the
chain side of the cartridge if that is any help. The bike is at least
5 years old, one of the original Kalaharis. TIA GazSeehttp://www.parktool.com/repair/readhowto.asp?id=93

Both sides undo towards the front, so CCW on the left cup and CW on the
right cup. Undo the left cup first, then the right.

Mine is the shimano cartridge type. From what I've read some have
right and some left hand thread.

Er, yes. That's what Paul meant "towards the front", CW being "clockwise".
The right hand side is left hand thread.

--
Mike
Van Tuyl titanium Dura Ace 10
Fausto Coppi aluminium Ultegra 10
Raleigh Record Sprint mongrel

taz said:

Paul Boyd said:

On 29/01/2007 17:55, taz said,

Quoted message said:

Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
the original BB in the bike. Can anyone tell me which way I should
unscrew it. I can't shift it either way.

Quoted message said:

Quoted message said:

Both sides undo towards the front, so CCW on the left cup and CW on the
right cup. Undo the left cup first, then the right.

Quoted message said:

Mine is the shimano cartridge type. From what I've read some have
right and some left hand thread.

It depends on the frame. Yours is British so it has both as above. The
left (non-drive) side is right hand thread. The right (drive) side is
left hand thread. Each side unscrews in the sense that the cranks
rotate when pedaling.
--
Phil Cook looking north over the park to the "Westminster Gasworks"

mb said:

taz said:

Paul Boyd said:

On 29/01/2007 17:55, taz said,

Quoted message said:

Quoted message said:

> Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
> the original BB in the bike. Can anyone tell me which way I should
> unscrew it. I can't shift it either way. There is a flange on the
> chain side of the cartridge if that is any help. The bike is at least
> 5 years old, one of the original Kalaharis. TIA GazSeehttp://www.parktool.com/repair/readhowto.asp?id=93

Quoted message said:

Quoted message said:

Both sides undo towards the front, so CCW on the left cup and CW on the
right cup. Undo the left cup first, then the right.

Quoted message said:

Mine is the shimano cartridge type. From what I've read some have
right and some left hand thread.Er, yes. That's what Paul meant "towards the front", CW being "clockwise".

The right hand side is left hand thread.

--

Er, yes, the point I was making is that I have cartridge type BB not
cups and bearings shown in the illustrations.

Quoted message said:

Mike
Van Tuyl titanium Dura Ace 10
Fausto Coppi aluminium Ultegra 10
Raleigh Record Sprint mongrel

taz said:

Er, yes, the point I was making is that I have cartridge type BB not
cups and bearings shown in the illustrations.

Oh, so you didn't mention threading then? OK.

Doesn't matter if you have a cartridge BB, the threading will be the same
unless you have an "Italian" BB (unlikely).
Try this: http://www.parktool.com/repair/readhowto.asp?id=94

--
Mike
Van Tuyl titanium Dura Ace 10
Fausto Coppi aluminium Ultegra 10
Raleigh Record Sprint mongrel

In article <[email hidden]>, mb
[email hidden] says...

Quoted message said:

Brian G said:

http://www.mountainbikerides.co.uk/fettling/bottom_bracket.htm

I think that's maybe overdoing it a little on the copper grease, bottom
picture.

Just a touch - I can't remember when I last bought copper grease, but it
was a long time ago and there's still some left.

On 29/01/2007 19:22, taz said,

Quoted message said:

Er, yes, the point I was making is that I have cartridge type BB not
cups and bearings shown in the illustrations.

It doesn't matter - the threading in the BB will still be the same
whether it's a cartridge or cup and cone. When a bike frame is built,
it is built using a standard BB thread. (Give or take the odd Italian
thread, which you won't have.)

Clockwise to undo on the right hand side, anti-clockwise to undo on the
left hand side. It won't be any different. If it's tight, give it some
more welly (after soaking overnight with WD40, perhaps)

--
Paul Boyd
http://www.paul-boyd.co.uk/

On 29/01/2007 18:57, mb said,

Quoted message said:

I think that's maybe overdoing it a little on the copper grease, bottom
picture.

Gordon Bennett! It just needs a smear off the end of a finger, not
lathered on with a brush!

--
Paul Boyd
http://www.paul-boyd.co.uk/

mb said:

taz said:

Paul Boyd said:

On 29/01/2007 17:55, taz said,

> Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
> the original BB in the bike. Can anyone tell me which way I should
> unscrew it. I can't shift it either way. There is a flange on the
> chain side of the cartridge if that is any help. The bike is at least
> 5 years old, one of the original Kalaharis. TIA GazSeehttp://www.parktool.com/repair/readhowto.asp?id=93

Both sides undo towards the front, so CCW on the left cup and CW on the
right cup. Undo the left cup first, then the right.

Mine is the shimano cartridge type. From what I've read some have
right and some left hand thread.

Er, yes. That's what Paul meant "towards the front", CW being "clockwise".
The right hand side is left hand thread.

No, the right hand side, as you sit on the bike (the side where the
chain is) has a left-hand thread. A left-hand thread is the unusual
kind, that you turn clockwise to undo. I think just a confusion of
terminology.

That's if it's "British". "Italian" ones have (normal) right-hand
threads on both sides.

They sometimes are difficult to shift. Penetrating oil is worth a try.
Something I've thought of doing but never had to resort to (don't know
if it would work) is try to find the drainholes under the BB and squirt
the penetrating oil in there where it might be more likely to find its
way to the threads.

in message <[email hidden]>, taz

(') said:

mb said:

taz said:

On 29 Jan, 18:49, Paul Boyd <[email hidden]> wrote:
> On 29/01/2007 17:55, taz said,

Quoted message said:

> > Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
> > the original BB in the bike. Can anyone tell me which way I should
> > unscrew it. I can't shift it either way. There is a flange on the
> > chain side of the cartridge if that is any help. The bike is at
> > least 5 years old, one of the original Kalaharis. TIA
> > GazSeehttp://www.parktool.com/repair/readhowto.asp?id=93

Quoted message said:

> Both sides undo towards the front, so CCW on the left cup and CW on
> the
> right cup. Undo the left cup first, then the right.

Quoted message said:

Mine is the shimano cartridge type. From what I've read some have
right and some left hand thread.Er, yes. That's what Paul meant
"towards the front", CW being "clockwise".

The right hand side is left hand thread.

Er, yes, the point I was making is that I have cartridge type BB not
cups and bearings shown in the illustrations.

Makes no difference. If the frame has English or ISO threading, that's the
way it unscrews. French and Italian threading are now very rare, for the
simple reason that both are unreliable. And as your bike is a Dawes, it
has English threads.

--
[email hidden] (Simon Brooke) http://www.jasmine.org.uk/~simon/

'You cannot put "The Internet" into the Recycle Bin.'

On 29/01/2007 21:23, Ben C said,

Quoted message said:

Quoted message said:

Er, yes. That's what Paul meant "towards the front", CW being "clockwise".
The right hand side is left hand thread.

No, the right hand side, as you sit on the bike (the side where the
chain is) has a left-hand thread. A left-hand thread is the unusual
kind, that you turn clockwise to undo. I think just a confusion of
terminology.

Haven't you just said exactly the same thing as mb?

--
Paul Boyd
http://www.paul-boyd.co.uk/

Ben C said:

mb said:

taz said:

On 29 Jan, 18:49, Paul Boyd <[email hidden]> wrote:
> On 29/01/2007 17:55, taz said,
>
> > Hi, I have to change the bottom bracket on my Dawes Kalahari. It is
> > the original BB in the bike. Can anyone tell me which way I should
> > unscrew it. I can't shift it either way. There is a flange on the
> > chain side of the cartridge if that is any help. The bike is at least
> > 5 years old, one of the original Kalaharis. TIA GazSeehttp://www.parktool.com/repair/readhowto.asp?id=93
>
> Both sides undo towards the front, so CCW on the left cup and CW on the
> right cup. Undo the left cup first, then the right.
>

Mine is the shimano cartridge type. From what I've read some have
right and some left hand thread.

Er, yes. That's what Paul meant "towards the front", CW being "clockwise".
The right hand side is left hand thread.

No, the right hand side, as you sit on the bike (the side where the
chain is) has a left-hand thread.

Which is just what you said! Sorry, I got a bit confused.

mb said:

I think that's maybe overdoing it a little on the copper grease, bottom
picture.

And why apply it with a brush? Put a dab on the thread from the tube and
smooth it round with a finger.

--
Don Whybrow

Sequi Bonum Non Time

"No man's life, liberty, or property is safe while the
legislature is in session." (Judge Gideon J. Tucker, 1866.)

Simon Brooke said the following on 29/01/2007 21:27:

Quoted message said:

Makes no difference. If the frame has English or ISO threading, that's the
way it unscrews. French and Italian threading are now very rare, for the
simple reason that both are unreliable. And as your bike is a Dawes, it
has English threads.

I don't think taz believes us :-(

--
Paul Boyd
http://www.paul-boyd.co.uk/

Don Whybrow said:

mb said:

I think that's maybe overdoing it a little on the copper grease, bottom
picture.And why apply it with a brush? Put a dab on the thread from the tube and

smooth it round with a finger.

which transfers some the the acidic bio-gunge (you can tell I'm not a
biologist) from your finger into the grease, hence use of a brush.
IMHO a clean, flat, metallic implement (e.g. small spatula) would be
better, as all sorts of rubbish can accumulate in brushes.....